Quantitative Aptitude - Arithmetic Ability Questions

Q:

In ΔABC, D and E are points on side AB and AC respectively. DE is parallel to BC. If lengths of AD, DB and DE are 9 cm, 6 cm and 5.4 cm respectively find length of BC?

A) 3.6 cm B) 4.8 cm
C) 11.2 cm D) 9 cm
 
Answer & Explanation Answer: D) 9 cm

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Q:

The point R(a,b) is first reflected in origin to R1 and R1 is reflected in x-axis to (-3,4). The co-ordinates of point R are

A) (3,4) B) (-3,-4)
C) (-3,4) D) (3,-4)
 
Answer & Explanation Answer: A) (3,4)

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Q:

If a = 5, b = 4, c = 8 then find the value of (a3 + b3 + c3 - 3abc)/(ab + bc + ca - a2  - b2 - c2)

 

A) 15 B) 17
C) -17 D) -15
 
Answer & Explanation Answer: C) -17

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Q:

α and β are the roots of quadratic equation. If α + β = 8 and α – β = 2√5, then which of the following equation will have roots α4 and β4?

A) x2 – 1522x + 14641 = 0 B) x2 + 1921x + 14641 = 0
C) x2– 1764x + 14641 = 0 D) x2+ 2520x + 14641 = 0
 
Answer & Explanation Answer: A) x2 – 1522x + 14641 = 0

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Q:

The point P (a,b) is first reflected in origin to P1 and P1 is reflected in Y­axis to (4,­3). The co­-ordinates of point P are

A) (4,3) B) (-­4,3)
C) (­-3,4) D) (3,­-4)
 
Answer & Explanation Answer: A) (4,3)

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Q:

Select the odd letters from the given alternatives.

A) GHI B) XYZ
C) VUT D) CDE
 
Answer & Explanation Answer: C) VUT

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Q:

A shopkeeper cheats to the extent of 8% while buying and selling fruits, by using tampered weights, his total gain in percentage is

A) 16.25 B) 16.44
C) 16.75 D) 16.5
 
Answer & Explanation Answer: B) 16.44

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Q:

What is that least digit that must be added to the product 5786 × 5784 to make it a perfect square?

 

A) 1 B) 6
C) 5 D) 4
 
Answer & Explanation Answer: A) 1

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